Finding the Fourth Proportional to 428,871.86, 591,841.27 and 245,107.36

Step by Step Solution

1. Step 1: Write the proportion equation
   428,871.86 : 591,841.27 = 245,107.36 : x
2. Step 2: Convert to fraction form
   428,871.86/591,841.27 = 245,107.36/x
3. Step 3: Cross multiply
   428,871.86x = 591,841.27 × 245,107.36
4. Step 4: Simplify right side
   428,871.86x = 145,064,654,060.92
5. Step 5: Solve for x
   x = 145,064,654,060.92/428,871.86
6. Step 6: Final answer
   x = 338,247.08